American Standard Exposed, Top Spud, Manual Flush Valve, For Use With Category Toilets, 1.6 Gallons per Flush - 6047161.002Manual toilet flush valves are sized to fit tankless toilets. These hand activated valves have a spud coupling for attaching to a toilet spud. They typically require a high pressure water supply to operate.,Manual flush valves are hand activated valves for flushing tankless toilets and urinals. Also known as manual flushometers, these flow control devices are a cost effective alternative to automatic valves and have a lever or button that requires no